CN102386482A - Multi-loop antenna system and electronic device with same - Google Patents
Multi-loop antenna system and electronic device with same Download PDFInfo
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- CN102386482A CN102386482A CN2010102748413A CN201010274841A CN102386482A CN 102386482 A CN102386482 A CN 102386482A CN 2010102748413 A CN2010102748413 A CN 2010102748413A CN 201010274841 A CN201010274841 A CN 201010274841A CN 102386482 A CN102386482 A CN 102386482A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/28—Combinations of substantially independent non-interacting antenna units or systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
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Abstract
The invention provides a multi-loop antenna system and an electronic device with the multi-loop antenna system. The multi-loop antenna system comprises an antenna module and a system module. The antenna module comprises an antenna base plate and a plurality of multi-loop antennas, wherein the multi-loop antennas are arranged on the antenna base plate; each multi-loop antenna comprises a first radiating body and a second radiating body; each first radiating body is provided with a feed end and an earthing end, and the feed ends and the earthing ends are adjacent to one another and are arranged with one another at intervals, so that one loop is formed by the first radiating bodies; each second radiating body is provided with a first end which is connected with each feed end and a second end which is connected with each earthing end, so that another loop is formed by the second radiating bodies; the distances from the geometric center of each loop antenna to a geometric center jointly defined by the loop antennas are as the same as one another, and the shortest distances between every two adjoining loop antennas are as the same as one another; and the system module is separated from the antenna base plate at a certain distance, the system module comprises at least one earthing surface which provides a radio frequency circuit on a system circuit board, and the at least one earthing surface is used for reflecting the radiation of the multi-loop antennas.
Description
Technical field
The present invention relates to a kind of antenna system, be meant many loops antenna system of a kind of high-gain and high directivity and electronic installation especially with this many loops antenna system.
Background technology
Existing wireless network bridge (the access point that is applied to; AP) antenna structure in is many with inverted-F antenna (Planar Inverted F Antenna; PIFA) in the majority with unipole antenna; For example: " double frequency mono-polar antenna of multiple-input and multiple-output (monopole antenna) device " that the TaiWan, China patent is disclosed for M377714 number; Wherein three unipole antennas are produced on the antenna ground face with Metal Cutting or impact style, and are installed in the bridger, can be applicable to the antenna system of multiple-input and multiple-output (MIMO) technology with formation.
But, though this antenna structure is built-in in device,, can occupy bigger space because antenna is stereochemical structure, make spendable limited space in the wireless network bridge.And the maximum gain of the antenna structure of existing convention in 2.4GHz or 5GHz operational frequency bands only can be 3-5dBi usually, and the directive property of aerial radiation field pattern is lower, do not satisfy the characteristic of required high-gain of bridger antenna and high directivity radiation pattern.
This shows that above-mentioned existing antenna structure obviously still has inconvenience and defective, and demands urgently further improving.In order to solve the problem of above-mentioned existence; Relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly; But do not see always that for a long time suitable design is developed completion, and general antenna structure can not address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of new antenna structure, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The objective of the invention is to, overcome the defective that existing antenna structure exists, and a kind of many loops antenna system of new structure is provided, technical problem to be solved comprises: reach dual frequency operation and have high directivity (directivity) and high-gain.
Another object of the present invention is to; Overcome the defective that existing antenna structure exists; And provide a kind of simple in structure, size is little, low form (low-profile), make easily, cost is low; And can be applicable to small-sized outdoor use wireless network bridge (access point, built-in many loops of double frequency antenna system AP).
The technical problem of the object of the invention and solution adopts following technical scheme to realize.Many loops antenna system according to the present invention proposes comprises an Anneta module and a system module.Anneta module comprises an antenna substrate and a plurality of loop antenna, and antenna substrate comprises a first surface and a second surface in contrast to this first surface; Above-mentioned loop antenna is laid on the first surface or second surface of antenna substrate; Each loop antenna include 1 one first operational frequency bands can be provided first radiant body, and 1 one second operational frequency bands can be provided second radiant body, this first radiant body has a feed side and an earth terminal that is positioned at its two ends; And feed side and earth terminal are adjacent and separately; Make first radiant body form a loop, and second radiant body has one first end and one second end that is positioned at its two ends, first end is connected with the feed side; Second end is connected with earth terminal; Make second radiant body form another loop, the geometric center of each loop antenna is identical with the distance of the geometric center that above-mentioned loop antenna defines jointly, and the beeline between the wantonly two adjacent loop antennas is identical; System module comprises at least one in opposite directions in the ground plane of the second surface of antenna substrate, provides that radio circuit uses on the system circuit board, and the parallel distance separately with the second surface of antenna substrate of system module, and in order to reflect the radiation of above-mentioned loop antenna.So the antenna of symmetrical structure (symmetrical structure) can make and possess identical isolation (isolation) between the antenna, and lets each loop antenna in the space, have the more signal covering space of symmetry.
The object of the invention and solve its technical problem and also can adopt following technical measures further to realize.
Preferably, aforesaid many loops antenna system, wherein respectively second radiant body of this loop antenna is arranged in the formed loop of its first radiant body.
Preferably; Aforesaid many loops antenna system; Wherein this second radiant body has a radiant section, and one first extension and one second extension of being extended by the two ends of this radiant section respectively, and the end of this first extension is first end of this second radiant body; The end of this second extension is second end of this second radiant body, and this radiant section forms a loop.
Preferably, aforesaid many loops antenna system, wherein this second radiant body has a radiant section, and two end opposite of this radiant section are respectively first end and second end of this second radiant body, and this radiant section forms a loop.
Preferably, aforesaid many loops antenna system, the geometric center of wherein wantonly two adjacent loop antennas respectively with geometric center that above-mentioned loop antenna defines jointly between the folded angle of line identical.
Preferably, aforesaid many loops antenna system, wherein respectively first extension of this loop antenna and second extension define an opening, and the geometric center that defines jointly towards above-mentioned loop antenna of this opening direction respectively.
Preferably, aforesaid many loops antenna system, wherein one of them forms a rectangle or circular loop at least for this first radiant body and second radiant body.
Preferably, aforesaid many loops antenna system, wherein antenna substrate comprises that also one is positioned at the perforation of the geometric center that above-mentioned loop antenna defines jointly, uses for a plurality of signal transmssion lines and passes through.
Preferably, aforesaid many loops antenna system, wherein the area of antenna substrate is less than or equal to the area of system module, can reflect the radiation of each loop antenna fully to guarantee system module.
The object of the invention and solve its technical problem and also adopt following technical scheme to realize.The electronic installation with many loops antenna system according to the present invention proposes comprises: a housing, an Anneta module, and a system module; Said Anneta module and system module are installed in this housing; Said Anneta module and system module are as stated.
The present invention compared with prior art has tangible advantage and beneficial effect.By technique scheme, the present invention has advantage and beneficial effect at least:
1. on antenna substrate, lay the long loop antenna of a plurality of all-waves; All-wave vast of heaven line is balanced type antenna (balanced antenna); Have the high-gain aerial characteristic, it is minimum that the isolation between antenna and the antenna (isolation) also can keep, and see through the radiation that at least one system ground on the system module reflects the loop antenna; Can make the radiation pattern of Anneta module have the characteristic of high directivity and high antenna gain, can promote the communication covering scope.
2. the geometric center of each loop antenna is identical with distance between the geometric center that above-mentioned loop antenna defines jointly in many loops antenna system; And the beeline of wantonly two adjacent loop antennas is identical, makes to have preferable isolation and identical radiation pattern and signal cover between each loop antenna.
3. the loop antenna uses the printing-type circuit board making, and making is simple and cost is low, and has the external form of low form and the structure of plane formula (planar), is fit to very much be applied on the wireless network bridge of small-sized outdoor use.
4. the opening direction of each loop antenna (feed-in position) is spent the rotary setting of (or 135 degree) with respect to the geometric center work 45 that the above-mentioned line of saving the situation defines jointly, and the aerial radiation field pattern can have the dual polarised radiation characteristic in vertical radiation direction (being positive Z axle).
In sum; The present invention make antenna system reach dual frequency operation and have high directivity and high-gain in; Have simple in structure, size is little, low form, making easily, low cost and other advantages; Obvious improvement being arranged technically, and have tangible good effect, really is the new design of a novelty, progress, practicality.
Above-mentioned explanation only is the general introduction of technical scheme of the present invention; Understand technological means of the present invention in order can more to know; And can implement according to the content of specification, and for let of the present invention above-mentioned with other purposes, feature and advantage can be more obviously understandable, below special act preferred embodiment; And conjunction with figs., specify as follows.
Description of drawings
Fig. 1 is the sketch map of first preferred embodiment of many loops of explanation the present invention antenna system;
Fig. 2 is the plane outspread drawing of single loop antenna in explanation first preferred embodiment;
Fig. 3 is the plane outspread drawing of Anneta module in explanation first preferred embodiment, and wherein opening direction is spent with respect to the geometric center rotation 45 that above-mentioned loop antenna defines jointly;
Fig. 4 is the plane outspread drawing of Anneta module in explanation first preferred embodiment, wherein the geometric center that defines jointly towards above-mentioned loop antenna of opening direction;
Fig. 5 is that the another kind of above-mentioned loop antenna in explanation first preferred embodiment is implemented the aspect sketch map;
Fig. 6 is the electronic installation sketch map of the built-in many loops antenna system of explanation;
Fig. 7 is the sketch map of the actual size between the single loop antenna in explanation first preferred embodiment;
Fig. 8 is the sketch map of the actual size between each loop antenna in explanation first preferred embodiment;
Fig. 9 is the sketch map of the actual size between antenna substrate and the system module in explanation first preferred embodiment;
Figure 10 is the 2-D radiation pattern measurement figure on loop antenna operation X-Z plane and Y-Z plane under 2442MHz in explanation first preferred embodiment;
Figure 11 is the 2-D radiation pattern measurement figure on loop antenna operation X-Z plane and Y-Z plane under 5490MHz in explanation first preferred embodiment;
Figure 12 is the reflection coefficient metric data figure of each loop antenna in explanation first preferred embodiment;
Figure 13 is each loop antenna isolation metric data figure each other in explanation first preferred embodiment;
Figure 14 is the radiation efficiency/antenna gain-frequency curve chart of many loops antenna system of explanation first preferred embodiment;
Figure 15 is the sketch map of second preferred embodiment of many loops of explanation the present invention antenna system; And
Figure 16 is the sketch map of the 3rd preferred embodiment of many loops of explanation the present invention antenna system.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention; Below in conjunction with accompanying drawing and preferred embodiment; To many loops antenna system of proposing according to the present invention and have embodiment, structure, characteristic and the effect thereof of the electronic installation of this many loops antenna system, specify as after.
Consult Fig. 1; First preferred embodiment for many loops of the present invention antenna system 100; This many loops antenna system 100 is for being operable in many loops antenna system 100 of double-frequency wireless local-area network WLAN (2400-2484/5150-5825MHz); In the present embodiment, many loops antenna system 100 comprises an Anneta module (being antenna modules) 10 and one and the system module (being system's module) 20 that is provided with of Anneta module 10 parallel interval.
Anneta module 10 comprises an antenna substrate (substrate) 1 and a plurality of loop antenna 2 (present embodiment is an example with three).Antenna substrate 1 (or claim medium substrate) be circular or polygon arbitrarily, and by the material that insulate (for example: glass fiber, FR4) made.Wherein, this antenna substrate 1 has the perforation 13 that a first surface 11, can supply a plurality of signal transmssion lines 5 to pass through in contrast to the second surface 12 and of this first surface 11.It should be noted that the perforation 13 of antenna substrate 1 is arranged at the position of the above-mentioned loop antenna 2 common geometric centers that define, with the length of brief signal transmission line 5 and avoid signal transmssion line 5 to be pressed onto loop antenna 2, and cause antenna performance to be affected.
Cooperate and consult Fig. 2; Above-mentioned loop antenna 2 is all the metallic loop antenna (one-wavelength loop antenna) 2 of the long resonance of all-wave; And be laid on this first surface 11 of antenna substrate 1; Respectively this loop antenna 2 comprises that one can provide first radiant body 3 of one first operational frequency bands, and 1 one second operational frequency bands can be provided second radiant body 4.First radiant body 3 has a feed side (feed point) 31 and one earth terminal (ground point) 32 that is positioned at its two ends, and feed side 31 and earth terminal 32 are adjacent and separately, make first radiant body 3 form a circular loop; Second radiant body 4 has one first end 41 and one second end 42 that is positioned at its two ends, and first end, 41 connection feed sides, 31, the second ends, 42 connection earth terminals 32, makes second radiant body, 4 parts form a circular loop.
In the present embodiment; Second radiant body 4 has a radiant section 40; And one first extension 410 and one second extension 420 that extend in parallel by the two ends of this radiant section 40 respectively; The end of first extension 410 is that the end of first end, 41, the second extensions 420 of second radiant body 4 is second end 42 of second radiant body 4, and radiant section 40 forms a circular loop.In addition, second radiant body 4 of each loop antenna 2 can be arranged in first radiant body, 3 formed loops, and first extension 410 and second extension 420 define an opening 430.
Cooperate and consult Fig. 3; The loop antenna 2 of present embodiment is along the circle distribution of circular antenna substrate 1; And the geometric center of each loop antenna 2 is identical with the distance of three loop antennas, the 2 common geometric centers that define (being the A point), i.e. La=Lb=Lc, and the beeline between the wantonly two adjacent loop antennas 2 is all identical; Be L1=L2=L3; The geometric center of wantonly two adjacent loop antennas 2 respectively with three loop antennas, the 2 common geometric centers that define (A point) between the folded angle of line also identical, promptly θ 1=θ 2=θ 3 just presss from both sides 120 degree.So the antenna of symmetrical structure (symmetrical structure) can make and possess identical isolation (isolation) between the antenna, and lets each loop antenna 2 in the space, have the more signal covering space of symmetry.
What specify is that second radiant body 4 is arranged in first radiant body, 3 formed loops, so utilizes first radiant body, 3 volume inside that second radiant body 4 is set, and therefore can under the condition in not extra increase space, reach two loop dual-band antenna designs.And in the present embodiment; The geometric center position of first radiant body 3 is different with the geometric center position of the radiant section 40 of second radiant body 4; And the line of both geometric centers is parallel to the bearing of trend of first extension 410 and second extension 420, makes radiant body 3 and the second radiant body 4 geometric center line left-right symmetric with both of winning.
In addition; In each loop antenna 2; The geometric center (A point) that the bearing of trend of first extension 410 and second extension 420 (being opening 430 directions) and three loop antennas 2 define jointly and the geometric center line (being La, Lb and Lc) of each loop antenna 2 press from both sides the α angle; It is preferably 45 degree; The rotary setting of (or 135 degree) is spent with respect to the geometric center position work 45 that three loop antennas 2 define jointly in the feed-in position that is loop antenna 2, makes the aerial radiation field pattern can have the dual polarised radiation characteristic in vertical radiation direction (being the Z axle).
Certainly; The geometric center that the direction of the opening 430 that first extension 410 and second extension 420 are defined also can define towards above-mentioned loop antenna 2 jointly; Promptly the bearing of trend of first extension 410 and second extension 420 is parallel to the geometric center line of geometric center (A point) that three loop antennas 2 define jointly and each loop antenna 2; Shown in Fig. 4 (omitting signal transmssion line 5 among the figure), its anglec of rotation is not limited.In addition; The radiant section 40 formed loops of first radiant body 3 and second radiant body 4 do not exceed with circle yet; Both can be all rectangle loop (as shown in Figure 5, as wherein to omit signal transmssion line 5), or first radiant body 3 is circular loop; Radiant section 40 is a rectangle loop etc., can reach resonate out the effect of double frequency of the present invention equally.
Consult Fig. 1; System module 20 is a system circuit board; It can be circle or polygon arbitrarily, and system module 20 has that at least one (for example: metal covering), this ground plane 201 is except the system ground as radio circuit on the system circuit board in the ground plane 201 of the second surface 12 of antenna substrate 1 in opposite directions; Also can be considered a reflecting plate (reflector); In order to reflect the radiation of above-mentioned loop antenna 2, Anneta module 10 is had outside the directive property (directivity) of height, also can promote the antenna gain of Anneta module 10 single direction (being the normal direction of the first surface 11 of antenna substrate 1).Wherein, system module 20 can be sandwich construction, and the superiors are the metal levels that approach, and lower floor then is a medium substrate, perhaps can be to comprise the more circuit layer of multilayer.Again, there are a spacing in 12 of ground plane (again can as a reflecting surface) 201 and second surfaces, as the useful space utilization of electronic component on the system module 20 (figure does not show) ornaments.In addition, the area of the antenna substrate 1 of present embodiment is less than or equal to the area of system module 20, can reflect the radiation of each loop antenna 2 fully to guarantee system module 20.
Consult Fig. 6; Many loops antenna system 100 of present embodiment is installed in like outdoor wireless network bridge (access point; AP) or in the housing 210 of wireless broadband router electronic installations 200 such as (router); And by small-sized coaxial line (mini-coaxial cable) as signal transmssion line 5; With the feed side 31 of signal feed-in loop antenna 2, but make and the system module 20 (being system circuit board) of many loops antenna system 100 fit different applications improve the elasticity that many loops antenna system 100 is used.Certainly, the kind of signal transmssion line 5 is not restricted because of present embodiment.
Consult Fig. 7 to Fig. 9, be the actual size sketch map of many loops antenna system 100 of present embodiment, wherein Fig. 7 is the plane outspread drawing of single loop antenna 2; Fig. 8 is the vertical view of many loops antenna system 100; Fig. 9 is the end view between antenna substrate 1 and the system module 20, among each figure the unit of numeral be millimeter (promptly millimeter) (mm), can consult among the figure each association learning the actual size of present embodiment, but not exceed with present embodiment.
In the present embodiment; Can resonate out the respectively frequency of 2.4GHz and 5GHz of first radiant body 3 and second radiant body 4; And the spacing between the ground plane 201 of antenna substrate 1 and system module 20 needs greater than 5 millimeters (mm); For a greater variety of electronic element storings on system module (system circuit board) 20, and between the present embodiment apart from being that 8.4 millimeters (mm) will obtain preferable antenna gain.
Consult Figure 10 and Figure 11; For the loop antenna 2 of present embodiment operates in the 2-D radiation pattern measurement figure of 2442MHz and 5490MHz respectively, and the geometric center that defines jointly of opening 430 directions of loop antenna 2 and three loop antennas 2 and the folded α angle of geometric center line of each loop antenna 2 are 45 degree.By knowing among the figure; By cooperatively interacting of Anneta module 10 and system module 20, make many loops antenna system 100 have higher antenna gain, i.e. the directive property of height in positive Z-direction; And the aerial radiation field pattern has the dual polarised radiation characteristic, applicable to wireless network bridge (AP).
Consult Figure 12; Reflection coefficient (Reflection Coefficient) metric data figure for each loop antenna 2; Explanation for ease cooperates and to consult Fig. 3, below three loop antennas 2 is defined as one first loop antenna 21, one second loop antenna 22 and one the 3rd loop antenna 23 respectively.And in Figure 12, S11, S22 and S33 are respectively the reflection coefficient of the first loop antenna 21, the second loop antenna 22 and the 3rd loop antenna 23.Can learn through experiment; The centre frequency of first operational frequency bands that first radiant body 3 provides is 2.4GHz; The centre frequency of second operational frequency bands that second radiant body 4 provides is 5GHz; And both respectively at the reflection coefficient of 2.4GHz and 5GHz all less than negative 10-dB, meet the standard of 2.4GHz and 5GHz Wireless LAN frequency band, so can be applicable in the Wireless LAN really of present embodiment.
Consult Figure 13, be isolation (Isolation) the metric data figure between each loop antenna 2, wherein S21 is the isolation between the first loop antenna 21 and the second loop antenna 22; S31 is the isolation between the first loop antenna 21 and the 3rd loop antenna 23; S32 is the isolation between the second loop antenna 22 and the 3rd loop antenna 23.Can learn that through experiment the isolation between each loop antenna 2 on average below negative 15-dB, has the good isolation degree.
Figure 14 is radiation efficiency (the radiation efficiency)/antenna gain-frequency curve chart of many loops antenna system 100 of present embodiment.Can know by figure; Maximum gain and the radiation efficiency of many loops antenna system 100 in 2.4GHz WLAN frequency band can reach 7.6dBi and 76% respectively; Maximum gain and radiation efficiency in 5GHz WLAN frequency band then can reach 9dBi and 83% respectively, have high antenna gain and good radiation characteristic.
Consult Figure 15, be second preferred embodiment of many loops of the present invention antenna system 100, roughly identical with first preferred embodiment, its difference is that above-mentioned loop antenna 2 can be laid in the different surfaces of antenna substrate 1 respectively.In the present embodiment; The first loop antenna 21 is laid in the first surface 11 of antenna substrate 1; The second loop antenna 22 and the 3rd loop antenna 23 then are laid in the second surface 12 of antenna substrate 1, so can receive or launch the signal of double frequency equally, and reach the characteristics of high antenna gain.And same the omission drawn signal transmssion line 5 among Figure 15.
Consult Figure 16; The 3rd preferred embodiment for many loops of the present invention antenna system 100; Roughly identical with first preferred embodiment, its difference is, in the present embodiment; Second radiant body 4 only has a radiant section 40, and two end opposite of this radiant section 40 are first end 41 and second end 42 of second radiant body 4.In other words; Second radiant body 4 of present embodiment saves first extension 410 and second extension 420 (like Fig. 2) compared to second radiant body 4 of first preferred embodiment; And two end opposite of directly utilizing radiant section 40 connect the feed side 31 and the earth terminal 32 of first radiant body 3, the effect that still can reach the signal of this case reception or emission double frequency and have high antenna gain and high directivity like this.And same the omission drawn signal transmssion line 5 among Figure 16.
In sum, the effect of many loops of the present invention antenna system 100 is following:
Many loops antenna system 100 is used multiple-input and multiple-output (MIMO) technology; By on antenna substrate 1, laying a plurality of loop antennas 2; And respectively the do for oneself all-wave of relative its operation center's frequency (2.4GHz and 5GHz) of the length of first radiant body 3 and second radiant body 4 is long; All-wave vast of heaven line is balanced type antenna (balanced antenna), has the high-gain aerial characteristic, and it is minimum that the isolation between antenna and the antenna (isolation) also can keep.Suitably adjust the distance between antenna feed-in spacing (being the spacing of feed side 31 and earth terminal 32) and first radiant body 3 and second radiant body 4; Can effectively control the impedance operator of loop antenna 2, make it in 2.4/5GHz Wireless LAN frequency band, obtain good impedance matching.
The geometric center of each loop antenna 2 is identical with distance between the geometric center that above-mentioned loop antenna 2 defines jointly in many loops antenna system 100; And the beeline of wantonly two adjacent loop antennas 2 is identical, makes and have identical isolation between each loop antenna 2 radiation pattern and the signal cover of (less than negative 15-dB) and symmetry.
The geometric center that the opening direction of each loop antenna 2 (feed-in position) defines with respect to above-mentioned loop antenna 2 is jointly made the rotary setting of 45 degree (or 135 degree); Make the aerial radiation field pattern can have the dual polarised radiation characteristic, so can reach the object of the invention really in vertical radiation direction (being positive Z axle).
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction; Though the present invention discloses as above with preferred embodiment; Yet be not in order to limiting the present invention, anyly be familiar with the professional and technical personnel, in not breaking away from technical scheme scope of the present invention; When the method for above-mentioned announcement capable of using and technology contents are made a little change or be modified to the equivalent embodiment of equivalent variations; In every case be the content that does not break away from technical scheme of the present invention, to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of technical scheme of the present invention according to technical spirit of the present invention.
Claims (10)
1. loop antenna system more than a kind is characterized in that:
This many loops antenna system comprises:
One Anneta module, and a system module; Said Anneta module comprises:
One antenna substrate comprises a first surface and a second surface in contrast to this first surface;
A plurality of loop antennas are laid on this first surface or this second surface of this antenna substrate, respectively this loop antenna include 1 one first operational frequency bands can be provided first radiant body; And 1 one second operational frequency bands is provided second radiant body; This first radiant body has a feed side and an earth terminal that is positioned at its two ends, and this feed side and this earth terminal is adjacent and separately, make this first radiant body form a loop; This second radiant body has one first end and one second end that is positioned at its two ends; This first end is connected with this feed side, and this second end is connected with this earth terminal, makes this second radiant body form another loop;
Wherein respectively the distance of the geometric center that defines jointly of the geometric center of this loop antenna and above-mentioned loop antenna is identical, and the beeline between the wantonly two adjacent loop antennas is identical;
Said system module comprises at least onely in opposite directions in the ground plane of this second surface of this antenna substrate, and the parallel distance separately with this second surface of this antenna substrate of this system module is in order to reflect the radiation of above-mentioned loop antenna.
2. many loops antenna system as claimed in claim 1 is characterized in that: respectively second radiant body of this loop antenna is arranged in the formed loop of its first radiant body.
3. many loops antenna system as claimed in claim 2; It is characterized in that: this second radiant body has a radiant section; And one first extension and one second extension of extending by the two ends of this radiant section respectively; The end of this first extension is first end of this second radiant body, and the end of this second extension is second end of this second radiant body, and this radiant section forms a loop.
4. many loops antenna system as claimed in claim 2 is characterized in that: this second radiant body has a radiant section, and two end opposite of this radiant section are respectively first end and second end of this second radiant body, and this radiant section forms a loop.
5. like claim 3 or 4 described many loops antenna systems, it is characterized in that: the geometric center of wantonly two adjacent loop antennas respectively with geometric center that above-mentioned loop antenna defines jointly between the folded angle of line identical.
6. many loops antenna system as claimed in claim 3 is characterized in that: respectively first extension of this loop antenna and second extension define an opening, and the geometric center that defines jointly towards above-mentioned loop antenna of this opening direction respectively.
7. many loops antenna system as claimed in claim 1 is characterized in that: one of them forms a rectangle or circular loop at least for this first radiant body and second radiant body.
8. many loops antenna system as claimed in claim 1 is characterized in that: this antenna substrate comprises that also one is positioned at the perforation of the geometric center that above-mentioned loop antenna defines jointly, uses for a plurality of signal transmssion lines and passes through.
9. many loops antenna system as claimed in claim 1 is characterized in that: the area of this antenna substrate is less than or equal to the area of this system module.
10. electronic installation with many loops antenna system is characterized in that:
This electronic installation comprises:
One housing, an Anneta module, and a system module;
Said Anneta module is installed in this housing, and this Anneta module comprises:
One antenna substrate comprises a first surface and a second surface in contrast to this first surface;
A plurality of loop antennas are laid on this first surface or this second surface of this antenna substrate, respectively this loop antenna include 1 one first operational frequency bands can be provided first radiant body; And 1 one second operational frequency bands can be provided second radiant body; This first radiant body has a feed side and an earth terminal that is positioned at its two ends, and this feed side and this earth terminal is adjacent and separately, make this first radiant body form a loop; This second radiant body has one first end and one second end that is positioned at its two ends; This first end is connected with this feed side, and this second end is connected with this earth terminal, makes this second radiant body form another loop;
Wherein respectively the distance of the geometric center that defines jointly of the geometric center of this loop antenna and above-mentioned loop antenna is identical, and the beeline between the wantonly two adjacent loop antennas is identical;
Said system module; Be installed in this housing; This system module comprises at least one in opposite directions in the ground plane of this second surface of this antenna substrate, and the parallel distance separately with this second surface of this antenna substrate of this system module, in order to reflect the radiation of above-mentioned loop antenna.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010274841.3A CN102386482B (en) | 2010-09-06 | 2010-09-06 | Multi-loop antenna system and electronic device with same |
| US13/074,159 US8525741B2 (en) | 2010-09-06 | 2011-03-29 | Multi-loop antenna system and electronic apparatus having the same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010274841.3A CN102386482B (en) | 2010-09-06 | 2010-09-06 | Multi-loop antenna system and electronic device with same |
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| CN102386482A true CN102386482A (en) | 2012-03-21 |
| CN102386482B CN102386482B (en) | 2014-06-18 |
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| CN201010274841.3A Active CN102386482B (en) | 2010-09-06 | 2010-09-06 | Multi-loop antenna system and electronic device with same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730719A (en) * | 2013-12-18 | 2014-04-16 | 清华大学 | Small-size high-isolation three-unit MIMO antenna based on printed circuit board |
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| CN103825088A (en) * | 2014-01-23 | 2014-05-28 | 西交利物浦大学 | Dual-frequency microstrip antenna applied to wireless capsule endoscope |
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Also Published As
| Publication number | Publication date |
|---|---|
| US8525741B2 (en) | 2013-09-03 |
| CN102386482B (en) | 2014-06-18 |
| US20120056790A1 (en) | 2012-03-08 |
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